AZHawgRider

Just bought a used 2010 Mustang with a stock Slacker radio.
I want to delete all the presets so I can use some for speed dialing with my phone with the Sync..
The Sync manual says there has to be some unused presets available to do this but all 30 of them are used.
I tried disconnecting the negative battery cable for 10 minutes but that failed. It appears to have set the presets back to some generic ones.
Thanks,
Stu